The message needs to be email it can not be directly saved into the /var/mail/username folder.
i.e. you would not use /usr/bin as a storage location, don't use /var/mail for that purpose.
The limitation

is the file that is being dropped/saved in /var/mail in a valid email mailbox format?

Only the MTA should be saving data in /var/mail nothing else should be saving files there if it is not a file in proper mailbox format.

/var/mail should not be used as a storage space for other applications. Change the location where oracle saves whatever this file is to /opt/oracle/ or /var/oracle anywhere you want the file other than locations that have specific meaning/purpose.

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

The message needs to be email it can not be directly saved into the /var/mail/username folder.

i.e. you would not use /usr/bin as a storage location, don't use /var/mail for that purpose.

The limitation is based on the processing of the email server (sendmail, postfix, etc.) and the filesystem limit dealing with the size of the file which I do not think is an issue.

An alternative to mailbox as a means to store email message is the use of a Maildir/ where each message is stored in an individual file within a directory structure for
Maildir
new - newly arrived emails
cur - read
tmp - temporary space that is used during the delivery of the message

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Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

This post first appeared at Oracleinaction (http://oracleinaction.com/undo-and-redo-in-oracle/)by Anju Garg (Myself).
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